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Astronomy Cast Ep. 238: Solar Activity

Article written: 11 Nov , 2011
Updated: 14 Jan , 2016
by

The Solar Cycle

The Sun looks like a harmless burning ball of fire in the sky: warm, life-giving and forever unchanging. But we know better, don’t we. It’s really a massive ball of churning hydrogen plasma, encased in twisting magnetic field lines, speckled with sunspots, and constantly disgorging vast plumes of radiation and charged particles. The Sun is very active indeed.

Click here to download the episode.

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“Solar Activity” shownotes on the Astronomy Cast website.

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3 Responses

  1. Member
    Anonymous says

    This one’s worth listening to twice! Nice…

  2. petr says

    wooo! Astronomy Cast! So many hours at work spent surreptitiously listening to it 🙂

  3. petr says

    wooo! Astronomy Cast! So many hours at work spent surreptitiously listening to it 🙂

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